Rockstar Games have just emailed us to let us know of a special episode on Game Trailers TV tomorrow night which will feature some new content from The Lost And Damned. They can explain it better...

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Hey guys, Just wanted to give you a heads-up and let you know that Grand Theft Auto IV: The Lost and Damned will be featured on a special episode of GameTrailers TV tommorrow night, hosted from our office in New York City. There will be tons of never-before-seen footage, including exclusive first glimpses of various cut scenes, gameplay and hints about what to expect from the storyline.GameTrailers TV airs Friday night at 10PM PST / 1 AM EST on Spike TV, and is also available online at GameTrailers.com and on Xbox LIVE, iTunes and Amazon Unbox.

To be honest it pretty much is a different game though. It's as much of a "DLC" as Vice City was to GTA3 in a way, albeit without an actual different city. I think they've been working on Lost And Damned longer than they worked on Vice City o_O.